MPlaceholder (Eclipse Platform API Specification)

All Superinterfaces:

MApplicationElement, MLocalizable, MPartSashContainerElement, MStackElement, MUIElement
```
public interface MPlaceholder
extends MUIElement, MPartSashContainerElement, MStackElement
```
A representation of the model object 'Placeholder'.
A Placeholder is a concrete class used to share elements between perspectives. The elements referenced by a Placeholder generally exist in the Window's 'sharedElements' list. By convention a placeholder usually shares the same elementId as the element that it's referencing.
Since:

1.0

Restriction:
This interface is not intended to be implemented by clients.
The following features are supported:
- Ref
- Closeable

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`MUIElement`	`getRef()`	Returns the value of the 'Ref' reference.
`boolean`	`isCloseable()`	Returns the value of the 'Closeable' attribute.
`void`	`setCloseable(boolean value)`	Sets the value of the '`Closeable`' attribute.
`void`	`setRef(MUIElement value)`	Sets the value of the '`Ref`' reference.

Methods inherited from interface org.eclipse.e4.ui.model.application.MApplicationElement
getContributorURI, getElementId, getPersistedState, getTags, getTransientData, setContributorURI, setElementId

Methods inherited from interface org.eclipse.e4.ui.model.application.ui.MLocalizable
updateLocalization

Methods inherited from interface org.eclipse.e4.ui.model.application.ui.MUIElement
getAccessibilityPhrase, getContainerData, getCurSharedRef, getLocalizedAccessibilityPhrase, getParent, getRenderer, getVisibleWhen, getWidget, isOnTop, isToBeRendered, isVisible, setAccessibilityPhrase, setContainerData, setCurSharedRef, setOnTop, setParent, setRenderer, setToBeRendered, setVisible, setVisibleWhen, setWidget

- Method Detail
  - getRef
```
MUIElement getRef()
```
    Returns the value of the 'Ref' reference.
    The reference to the actual UI element that this Placeholder is acting as a proxy for.
    
    Returns:
    
    the value of the 'Ref' reference.
    
    See Also:
    
    setRef(MUIElement)
  - setRef
```
void setRef(MUIElement value)
```
    Sets the value of the 'Ref' reference.
    
    Parameters:
    
    value - the new value of the 'Ref' reference.
    
    See Also:
    
    getRef()
  - isCloseable
```
boolean isCloseable()
```
    Returns the value of the 'Closeable' attribute. The default value is "false".
    Determines whether the element (usually a Part) referenced by this Placeholder can be closed by the User. This allows a Part to be closeable in one perspective but not closeable in a different one.
    
    Returns:
    
    the value of the 'Closeable' attribute.
    
    See Also:
    
    setCloseable(boolean)
  - setCloseable
```
void setCloseable(boolean value)
```
    Sets the value of the 'Closeable' attribute.
    
    Parameters:
    
    value - the new value of the 'Closeable' attribute.
    
    See Also:
    
    isCloseable()